Fillers Method

This method is on par with the No-Sand Method in terms of quality of finish but is a slightly slower process. However, it is faster than hand-sanding or using a Dremel to post process your prints. Relevant PPE such as a mask and gloves should be used when utilising this method.


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Finish Quality
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  • High-cover aerosol paint + primer (such as Rustoleum 2X)
  • Acrylic or enamel fast-drying spray putty (such as Superfine High Build Filler)
  • Isopropyl wipes or similar to clean parts


  1. 1.
    Ensure that your printed parts are clean and dry, wipe the parts down with Isopropyl wipes or a similar product and let dry.
  2. 2.
    Begin by applying a thin coat of high-cover spray-putty to the parts. Note that the spray-putty may cause blotching to your surface if applied too thick or unevenly across your surface.
  3. 3.
    Wait 30-45 minutes (or as instructed on bottle) between coats.
  4. 4.
    Re-coat your parts a total of 3-5 times.
  5. 5.
    Once you have applied all the necessary coats (according to how smooth you would like the finish of your surface) leave your parts to dry overnight. The spray-putty will fill up the gaps between the prints' layers and level your surface smoothly.
  6. 6.
    Apply a medium coat of high-cover spray paint to your part.
  7. 7.
    Wait 10 minutes between applying your paint coats.
  8. 8.
    Repeat the painting process 3-5 times as necessary.
  9. 9.
    Wipe your parts clean and you are ready to go.